초록 ▼

The present invention relates to a new and integrated process involving the utilization of a primary adsorption bed containing a regenerable, physical absorbent and an auxiliary sorption bed containing a chemisorbent and an optional physical absorbent for the removal of sulfur compounds and water fr

The present invention relates to a new and integrated process involving the utilization of a primary adsorption bed containing a regenerable, physical absorbent and an auxiliary sorption bed containing a chemisorbent and an optional physical absorbent for the removal of sulfur compounds and water from a fluid stream, which process provides for higher yields, higher purity and lower costs.

대표청구항 ▼

A process for the removal of sulfur compounds and water from a fluid stream feedstock comprising the steps of: (a) passing the fluid stream feedstock through an inlet end of at least one primary adsorber which is on an adsorption mode containing adsorbent selective for the adsorption of sulfur compo

A process for the removal of sulfur compounds and water from a fluid stream feedstock comprising the steps of: (a) passing the fluid stream feedstock through an inlet end of at least one primary adsorber which is on an adsorption mode containing adsorbent selective for the adsorption of sulfur compounds and water and removing a first adsorption effluent which is substantially free of sulfur compounds and water from an outlet end of the at least one primary adsorber, wherein as adsorption continues an adsorption front of the sulfur compounds is established at the inlet end of the adsorber and progressively moves towards the outlet end; (b) passing a regeneration medium through the outlet end of at least one primary adsorber which is on a regeneration mode and contains sulfur-laden and water-laden adsorbent under desorption conditions to regenerate the adsorbent and provide a regeneration effluent leaving the inlet end of the adsorber containing an increased concentration of the sulfur compounds and water, wherein as regeneration continues, the sulfur compound concentration within the regeneration effluent progressively increases to a maximum value and then progressively decreases to a substantially lower value, and wherein the water concentration within the regeneration effluent also progressively increases to a maximum value and then progressively decreases to a substantially lower value, the said water concentration maximum value occurring at a time subsequent to the appearance of the sulfur concentration maximum value; (c) cooling the regeneration effluent, when the sulfur compound concentration has decreased to a substantially lower level, to condense water contained within the regeneration effluent and removing said condensed water to provide a treated regeneration effluent; (d) combining the treated regeneration effluent with fluid stream feedstock in step (a) and passing the combination through the at least one primary adsorber which is on the adsorption mode and removing a second adsorption effluent which is substantially free of sulfur compounds and water from the outlet end of the at least one primary adsorber; (e) passing at least a portion of the second adsorption effluent from step (d), at least when the sulfur adsorption front breaks through the outlet end of the adsorber to cause an increase in the concentration of sulfur compounds in the second adsorption effluent, through the inlet end of at least one auxiliary sorber containing sorbent selective for the sorption of sulfur compounds in the adsorption effluent to provide a product effluent being substantially free of sulfur and water compounds; and (f) continuing the adsorption in step (d) until the adsorption effluent reaches a predetermined sulfur compound concentration value.